Finally arrived, I should have bought half a dozen...discovered that my Makita belt sanders (3 & 4 X 24) fit in perfectly! P.S. Makita's belters are great and with the attachment of either Fein's Flex Hose End Adaptor-PART#: 921069A13 ($1.50) or Vac Step Adaptor-PART#: 921072K13 (4.25) from Coastal Tool they become virtually dustless!!!